Plz. help

[gmat009]

Ideally, the professional career diplomat should help in the ongoing maintenance of an effective American foreign policy despite changes in administration.
(A) in the ongoing maintenance of
(B) in the maintaining of
(C) maintain
(D) to maintain and continue
(E) the maintenance of

[Mani_mba]

IMO C.

[gmat009]

IMO C.

If you can explain your answers that will help me understanding the reasoning also because I do have answers for these.
What's wrong with D

[Mani_mba]

Okay.

In D, "To maintain" and "to continue" are the same. Bcoz maintain implies continuation of an action/process.

Moreover, X should help maintain Y is a correct construction.

HTH.

[gmat009]

Okay.

In D, "To maintain" and "to continue" are the same. Bcoz maintain implies continuation of an action/process.

Moreover, X should help maintain Y is a correct construction.

HTH.

Thanks